Abstract
The aim of the present study was to investigate cross-sectionally the association of postmenopausal muscle strength with simple performance tests. A random sample of 1,166 naturally postmenopausal women (born 1932–1941) was selected from the Kuopio Osteoporosis Risk Factor and Prevention (OSTPRE) study cohort. Grip and quadriceps strength were measured with strain gauge dynamometers and reported in both absolute values (KPa and kg) and per kilogram of body mass (N cm−2 kg−1 and N kg−1). In addition, two performance tests, ‘ability to stand on one foot’ and ‘ability to squat down to touch the floor’ were carried out. A five-category self-assessment of overall health (‘very good’, ‘good’, ‘moderate’, ‘bad’, and ‘very bad’) was obtained by postal questionnaire. The women that were able to stand on one foot and able to squat down to touch the floor had greater grip and quadriceps strength than their counterparts (P<0.001 and P<0.03 in ANOVA, respectively). In addition, self-assessed health had a strong positive association with muscle strength in the grip and leg extensor muscles in ANOVA (P<0.001 between ‘very good’ and ‘moderate’ or poorer state of health) and regression model (P<0.001). Adjustment for age, duration of menopause, body mass, height, physical activity level, use of HRT, and number of diseases and medications did not change any of the main effects. Also, there were no differences in results between absolute measurement values and values reported per kilogram of body mass. According to the present study, a simple performance test may be useful in the prediction of postmenopausal muscle strength. Furthermore, self-assessed state of health is strongly associated with muscle strength in postmenopausal women.
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This study was financially supported by Miina Sillanpää Foundation and Emil Aaltonen Foundation.
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Sirola, J., Rikkonen, T., Kröger, H. et al. Factors related to postmenopausal muscle performance: a cross-sectional population-based study. Eur J Appl Physiol 93, 102–107 (2004). https://doi.org/10.1007/s00421-004-1173-7
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DOI: https://doi.org/10.1007/s00421-004-1173-7